// Copyright (C) Kumo inc. and its affiliates.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//


#pragma once
#include <google/cloud/storage/client.h>
#include <pollux/common/base/exceptions.h>

namespace kumo::pollux {

namespace {
constexpr const char* kSep{"/"};
constexpr std::string_view kGcsScheme{"gs://"};

} // namespace

std::string getErrorStringFromGcsError(const google::cloud::StatusCode& error);

inline bool isGcsFile(const std::string_view filename) {
  return (filename.substr(0, kGcsScheme.size()) == kGcsScheme);
}

inline void setBucketAndKeyFromGcsPath(
    const std::string& path,
    std::string& bucket,
    std::string& key) {
  auto firstSep = path.find_first_of(kSep);
  bucket = path.substr(0, firstSep);
  key = path.substr(firstSep + 1);
}

inline std::string gcsURI(std::string_view bucket) {
  std::stringstream ss;
  ss << kGcsScheme << bucket;
  return ss.str();
}

inline std::string gcsURI(std::string_view bucket, std::string_view key) {
  std::stringstream ss;
  ss << kGcsScheme << bucket << kSep << key;
  return ss.str();
}

inline std::string gcsPath(const std::string_view& path) {
  // Remove the prefix gcs:// from the given path
  return std::string(path.substr(kGcsScheme.length()));
}

} // namespace kumo::pollux
